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AD7888 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD7888 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 18 page Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a AD7888 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 2.7 V to 5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP FUNCTIONAL BLOCK DIAGRAM SAR + ADC CONTROL LOGIC AGND REF IN/REF OUT AIN8 AIN1 SCLK DOUT DIN AGND AD7888 VDD CS T/H I/P MUX BUF 2.5V REF CHARGE REDISTRIBUTION DAC SPORT COMP FEATURES Specified for VDD of 2.7 V to 5.25 V Flexible Power/Throughput Rate Management Shutdown Mode: 1 A Max Eight Single-Ended Inputs Serial Interface: SPI™/QSPI™/MICROWIRE™/DSP Compatible 16-Lead Narrow SOIC and TSSOP Packages APPLICATIONS Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile Communications) Instrumentation and Control Systems High-Speed Modems GENERAL DESCRIPTION The AD7888 is a high speed, low power, 12-bit ADC that oper- ates from a single 2.7 V to 5.25 V power supply. The AD7888 is capable of a 125 kSPS throughput rate. The input track-and- hold acquires a signal in 500 ns and features a single-ended sampling scheme. The AD7888 contains eight single-ended analog inputs, AIN1 through AIN8. The analog input on each of these channels is from 0 to VREF. The part is capable of con- verting full power signals up to 2.5 MHz. The AD7888 features an on-chip 2.5 V reference that can be used as the reference source for the A/D converter. The REF IN/REF OUT pin allows the user access to this reference. Alter- natively, this pin can be overdriven to provide an external refer- ence voltage for the AD7888. The voltage range for this external reference is from 1.2 V to VDD. CMOS construction ensures low power dissipation of typically 2 mW for normal operation and 3 µW in power-down mode. The part is available in a 16-lead narrow body small outline (SOIC) and a 16-lead thin shrink small outline (TSSOP) package. PRODUCT HIGHLIGHTS 1. Smallest 12-bit 8-channel ADC; 16-lead TSSOP is the same area as an 8-lead SOIC and less than half the height. 2. Lowest Power 12-bit 8-channel ADC. 3. Flexible power management options including automatic power-down after conversion. 4. Analog input range from 0 V to VREF (VDD). 5. Versatile serial I/O port (SPI/QSPI/MICROWIRE/DSP Compatible). SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corporation. REV. C ©2010 Analog Devices, Inc. All rights reserved. |
Số phần tương tự - AD7888_17 |
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Mô tả tương tự - AD7888_17 |
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